CN109768020A - A kind of novel microchannel cold plates - Google Patents
A kind of novel microchannel cold plates Download PDFInfo
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- CN109768020A CN109768020A CN201811418533.6A CN201811418533A CN109768020A CN 109768020 A CN109768020 A CN 109768020A CN 201811418533 A CN201811418533 A CN 201811418533A CN 109768020 A CN109768020 A CN 109768020A
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- cooling base
- feed liquor
- liquid cooling
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- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
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Abstract
A kind of novel microchannel cold plates disclosed by the invention, it include: a liquid cooling base, feed liquor conduit and liquid outlet groove road are formed on the upper face of the liquid cooling base, the feed liquor conduit, liquid outlet groove road one end be respectively feed liquor confluence end, go out liquid confluence end, its other end is interconnected, and end of converging respectively with the feed liquor is formed on the side of the liquid cooling base, goes out inlet, liquid outlet that liquid confluence end is connected to；It is respectively and fixedly installed to the feed liquor conduit, the micro-channel structure in liquid outlet groove road；And the fixed cover board being covered on the upper face of the liquid cooling base of sealing；The micro-channel structure is segmented micro-channel structure, and the segmented micro-channel structure is made of the spaced apart micro-channel unit of the length direction along the liquid cooling base, and each micro-channel unit is made of the stacking of at least one layer of micro-channel flat.The present invention effectively reduces the flow resistance of liquid refrigerant, improves heat exchange efficiency and heat dissipation heat flow density, increases heat exchange area.
Description
Technical field
The present invention relates to high heat flux density cooling electronic component technical field more particularly to a kind of novel microchannel are cold
Plate.
Background technique
High-performance electronic chip, power device, laser device can distribute a large amount of heat, partial power during the work time
It can be significantly more than 100W/cm2-200W/cm2, cooling requirements are not achieved in the conventional type of cooling in performance.Therefore, by small
The manufacturing processing technic of structure reduces characteristic size, and promotes the coefficient of heat transfer of cooling fluid especially liquid, reaches Gao Gong
The microchannel heat sink of rate heat dissipation generates therewith.The structure of this microchannel heat sink is mainly by micro-channel structure, microfoam gold
Belong to structure, silicon substrate radiator structure etc., but as size falling pressure difference is consequently increased, is unfavorable for the reality of minitype radiator part
It is existing.Traditional micro-channel radiator structure mostly uses serial single flow structure or single layer parallel-connection structure to realize micro-channel, passes through machinery
The modes such as processing, laser engraving, 3D metallic print are processed on base material.But the microchannel of machining generally exists
0.5mm or more, generally in 0.1mm or more, difficulty of processing is larger for the microchannel of laser engraving, and the batch production period is longer；Foam
The microchannel structure of metal is honeycomb, belongs to the structure of full parallel connection, thermal coefficient is smaller, is essentially acted as microchannel at present
Radiator structure is smaller, and the cost of 3D metallic print technology is larger, is unfavorable for producing in enormous quantities.In addition, above-mentioned processing method
There is also the coefficients of heat transfer it is low, heat exchange area is small the disadvantages of, simultaneously because heat exchanging fluid strikes micro-structure, flow area from import
Sudden contraction, flow direction change, and will lead to the biggish reflux in part and pressure difference, generate biggish reflux and pressure difference, produce
Raw higher pressure drag influences the operational efficiency of total system, and if heating device temperature is high, boiling is generated at narrow entrance openings
It rises, can further deteriorate heat transfer and flowing.
For this purpose, the Chinese invention patent application that number of patent application is 201710706022.3 discloses one kind based on microchannel
The microchannel of porous flat pipe integrates cold plate comprising: for placing the cavity area of microchannel porous flat pipe, integrating cavity zone
Liquid cooling cavity substrate and for liquid cooling cavity substrate to be covered to the cover board to form enclosed construction.The microchannel placed in cavity area is more
Hole flat tube is unfavorable for reducing the flow resistance of liquid refrigerant using unistage type structure, and the flow resistance for easily leading to liquid refrigerant increases, and draws
It plays system overall resistance to increase, flow reduces, and increases the load of pump.
Summary of the invention
Technical problem to be solved by the present invention lies in: a kind of raising heat exchange efficiency is provided in view of the deficiencies of the prior art
With radiate heat flow density, reduce liquid refrigerant flow resistance, increase heat exchange area, suitable for the novel microchannel cold plates of batch production.
The technical problems to be solved by the invention can adopt the following technical scheme that realize:
A kind of novel microchannel cold plates, comprising:
One liquid cooling base, be formed on the upper face of the liquid cooling base length direction along the liquid cooling base extend and
The feed liquor conduit and liquid outlet groove road being arranged parallel, the feed liquor conduit, liquid outlet groove road one end be respectively feed liquor confluence end,
Out liquid converge end, the other end be interconnected, be formed on the side of the liquid cooling base respectively with the feed liquor confluence end,
Inlet, the liquid outlet of liquid confluence end connection out；
It is respectively and fixedly installed to the feed liquor conduit, the micro-channel structure in liquid outlet groove road；And
The fixed cover board being covered on the upper face of the liquid cooling base of one sealing；It is characterized in that,
The micro-channel structure is segmented micro-channel structure, and the segmented micro-channel structure is by along the liquid cooling base
The spaced apart micro-channel unit of length direction constitute, structure is laminated by least one layer of micro-channel flat in each micro-channel unit
At.
In a preferred embodiment of the invention, the liquid cooling base feed liquor confluence end, go out liquid confluence end in point
It is not provided with feed liquor deflector, goes out liquid deflector.
In a preferred embodiment of the invention, in the other end in the feed liquor conduit of the liquid cooling base, liquid outlet groove road
Inside it is respectively arranged with water conservancy diversion protrusion.
In a preferred embodiment of the invention, the channel of the micro-channel flat has certain variable diameter, variable diameter
For necking 1-5 degree.
In a preferred embodiment of the invention, the cover board passes through diffusion welding (DW), soldering, argon arc welding or electron beam welding
Welding manner sealing be fixed on the upper face of the liquid cooling base.
Due to using technical solution as above, the beneficial effects of the present invention are: the present invention passes through in liquid cooling base
Segmented micro-channel structure is installed in feed liquor conduit, liquid outlet groove road, the flow resistance of liquid refrigerant is effectively reduced, improves heat exchange
Efficiency and heat dissipation heat flow density, increase heat exchange area.Micro-channel flat in segmented channel structure has certain variable diameter,
Heat-exchange system can effectively be increased.In addition, segmented micro-channel structure is formed using modularization prefabrication system, it is raw to be suitable for batch
It produces.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is top view of the invention.
Fig. 2 is the decomposition texture schematic diagram at a visual angle of the invention.
Fig. 3 is the decomposition texture schematic diagram at another visual angle of the invention.
Fig. 4 be micro-channel unit of the invention be single layer when sectional view.
The sectional view that Fig. 5 is micro-channel unit of the invention when being double-deck.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Referring to Fig. 1 to Fig. 3, what is provided in figure is a kind of novel microchannel cold plates, including liquid cooling base 100, segmentation decline
Channel structure 200a, 200b and cover board 300.
Liquid cooling base 100 is made of the metals such as copper, aluminium, stainless steel, titanium or nonmetallic materials, in liquid cooling base 100
Upper face on be formed with along liquid cooling base 100 length direction extend and the feed liquor conduit 110 that is arranged parallel and liquid out
Conduit 120, feed liquor conduit 110, liquid outlet groove road 120 one end be respectively feed liquor confluence end 111, go out liquid confluence end 121, it is another
End is interconnected.It is formed with end 111 of converging respectively with feed liquor on the side of liquid cooling base 100, goes out what liquid confluence end 121 was connected to
Inlet 130, liquid outlet 140.
Segmented micro-channel structure 200a, 200b can be used the nonmetallic materials such as the metals such as copper, aluminium, titanium or ceramics and be made,
It is fixedly mounted on feed liquor conduit 110 by welding manner, in liquid outlet groove road 120.Segmented micro-channel structure 200a, 200b by
It is constituted along the length direction of liquid cooling base 100 spaced apart micro-channel unit 210a, 210b, each micro-channel unit 210a,
210b is made of the stacking of at least one layer of micro-channel flat 211a, 211b, and wherein Fig. 4 is shown by one layer of micro-channel flat
The micro-channel unit that 211a, 211b are constituted, Fig. 5, which is shown, is laminated the microflute constituted by two layers of micro-channel flat 211a, 211b
Road unit.In addition, through-hole of the channel of micro-channel flat 211a, 211b for the equal through-hole of diameter or with certain variable diameter,
The variable diameter rate of through-hole with certain variable diameter is necking 1-5 degree, can effectively increase heat-exchange system in this way.
Cover board 300 is made of the metals such as copper, aluminium, stainless steel, titanium or nonmetallic materials, by diffusion welding (DW), soldering,
The sealing fixation of the welding manner of argon arc welding or electron beam welding is covered on the upper face of liquid cooling base 100, so that cover board
The case where forming sealing between 300 and liquid cooling base 100, being not in leakage, effectively reduces thermal contact resistance.
Liquid cooling base 100 feed liquor confluence end 111, go out liquid confluence end 121 in be respectively arranged with feed liquor deflector 111a,
Liquid deflector 121a out, feed liquor deflector 111a and the out design of liquid deflector 121a can be used for reducing segmented micro-channel structure
Assignment of traffic between 200a, 200b is uneven.
Water conservancy diversion protrusion is respectively arranged in the feed liquor conduit 110 of liquid cooling base 100, the other end in liquid outlet groove road 120
112,122, water conservancy diversion protrusion 112,122 is for the confluence of liquid and the distribution of flow.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. a kind of novel microchannel cold plates, comprising:
One liquid cooling base is formed with the length direction along the liquid cooling base on the upper face of the liquid cooling base and extends and mutually
The feed liquor conduit and liquid outlet groove road of parallel arrangement, the feed liquor conduit, liquid outlet groove road one end be respectively feed liquor confluence end, go out liquid
Confluence end, the other end are interconnected, and end of converging respectively with the feed liquor is formed on the side of the liquid cooling base, goes out liquid
Inlet, the liquid outlet of confluence end connection；
It is respectively and fixedly installed to the feed liquor conduit, the micro-channel structure in liquid outlet groove road；And
The fixed cover board being covered on the upper face of the liquid cooling base of one sealing；It is characterized in that,
The micro-channel structure is segmented micro-channel structure, and the segmented micro-channel structure is by the length along the liquid cooling base
It spends the spaced apart micro-channel unit in direction to constitute, each micro-channel unit is made of the stacking of at least one layer of micro-channel flat.
2. novel microchannel cold plates as described in claim 1, which is characterized in that the liquid cooling base feed liquor confluence end,
Feed liquor deflector is respectively arranged in liquid confluence end out, goes out liquid deflector.
3. novel microchannel cold plates as described in claim 1, which is characterized in that the liquid cooling base feed liquor conduit, go out
Water conservancy diversion protrusion is respectively arranged in the other end in liquid bath road.
4. novel microchannel cold plates as described in claim 1, which is characterized in that the channel of the micro-channel flat has certain
Variable diameter, variable diameter be necking 1-5 degree.
5. novel microchannel cold plates as described in claim 1, which is characterized in that the cover board passes through diffusion welding (DW), soldering, argon arc
The sealing of the welding manner of weldering or electron beam welding is fixed on the upper face of the liquid cooling base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811418533.6A CN109768020A (en) | 2018-11-26 | 2018-11-26 | A kind of novel microchannel cold plates |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811418533.6A CN109768020A (en) | 2018-11-26 | 2018-11-26 | A kind of novel microchannel cold plates |
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| CN109768020A true CN109768020A (en) | 2019-05-17 |
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| CN201811418533.6A Pending CN109768020A (en) | 2018-11-26 | 2018-11-26 | A kind of novel microchannel cold plates |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110473848A (en) * | 2019-08-08 | 2019-11-19 | 清华大学 | Heat sink and cooling system |
| CN110600445A (en) * | 2019-09-02 | 2019-12-20 | 奇鋐科技股份有限公司 | Improved structure of liquid-cooled heat dissipation head |
| CN112197376A (en) * | 2020-10-09 | 2021-01-08 | 东华大学 | Indoor ceiling radiation plate |
| CN113075257A (en) * | 2021-04-25 | 2021-07-06 | 无锡江南计算技术研究所 | Method and device for testing cooling performance of liquid cooling cold plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936625A (en) * | 2010-09-02 | 2011-01-05 | 陈基镛 | Dual-row porous microchannel flat pipe |
| CN103063076A (en) * | 2012-11-21 | 2013-04-24 | 三花控股集团有限公司 | Heat exchanger |
| CN103796492A (en) * | 2014-01-25 | 2014-05-14 | 清华大学 | Heat collecting end |
| CN204665753U (en) * | 2015-03-27 | 2015-09-23 | 重庆超力高科技股份有限公司 | A kind of reducing flat tube for micro-channel heat exchanger |
| CN107464793A (en) * | 2017-08-17 | 2017-12-12 | 中国电子科技集团公司第二十九研究所 | A kind of microchannel based on microchannel porous flat pipe integrates cold drawing and preparation method |
-
2018
- 2018-11-26 CN CN201811418533.6A patent/CN109768020A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936625A (en) * | 2010-09-02 | 2011-01-05 | 陈基镛 | Dual-row porous microchannel flat pipe |
| CN103063076A (en) * | 2012-11-21 | 2013-04-24 | 三花控股集团有限公司 | Heat exchanger |
| CN103796492A (en) * | 2014-01-25 | 2014-05-14 | 清华大学 | Heat collecting end |
| CN204665753U (en) * | 2015-03-27 | 2015-09-23 | 重庆超力高科技股份有限公司 | A kind of reducing flat tube for micro-channel heat exchanger |
| CN107464793A (en) * | 2017-08-17 | 2017-12-12 | 中国电子科技集团公司第二十九研究所 | A kind of microchannel based on microchannel porous flat pipe integrates cold drawing and preparation method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110473848A (en) * | 2019-08-08 | 2019-11-19 | 清华大学 | Heat sink and cooling system |
| CN110473848B (en) * | 2019-08-08 | 2020-12-08 | 清华大学 | Heat absorbing device and heat dissipation system |
| CN110600445A (en) * | 2019-09-02 | 2019-12-20 | 奇鋐科技股份有限公司 | Improved structure of liquid-cooled heat dissipation head |
| CN112197376A (en) * | 2020-10-09 | 2021-01-08 | 东华大学 | Indoor ceiling radiation plate |
| CN112197376B (en) * | 2020-10-09 | 2022-03-22 | 东华大学 | Indoor ceiling radiation plate |
| CN113075257A (en) * | 2021-04-25 | 2021-07-06 | 无锡江南计算技术研究所 | Method and device for testing cooling performance of liquid cooling cold plate |
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Application publication date: 20190517 |